Of course we had to visit New York Public Library when we were on 5th Avenue, and so we did! Mostly because of how gorgeous a piece of work the Stephen A. Schwarzman building is. So beautiful to just walk around in this amazing building - Also, it's completely free to go in there AND they have restrooms! (Yes, it's actually quite hard to find restrooms around New York City). The library can be found on 5th Avenue at 42nd Street.